Locomotive headlight



3m, Wll liamlfif Witt Sept. 4-, 1923.

W. H. DE WITT LOCONOTIYE HEADLIGHT Filed Kay 16. 1922 Patented Sept. 4:, 1923.

.WILLIAJVI H. DE WITT, OF CGLUIVIBUS, OHIO.

nooomo'rrvn HEADLIGHT.

Application filed May 16,

T 0 all whom it may concern:

Be it known that WILLIAM H. DE WITT, a citizen of the United States, residing at Columbus. in the county of Franklin and State of Ohio, has invented certain new and useful Improvements in Locomotive Head lights, of which the following is a specification.

The present invention is directed to im-' provements in locomotive head lights.

The primary object of the invention is to provide a head light of this character utilizing an incandescent bulb as its source of illumination,means being provided whereby the bulb can be adjusted axially as well as about the axis of the associated reflector.

A further object of the invention is to provide a head light of this character so constructed that it may be rocked to proie/ct the light rays at desired distances in advance of the locomotive.

A still further object of the invention is to provide novel means for detachably supporting the reflector whereby the same can be quickly removed or replaced, as the occasion may require.

lVith these and other objects in view, as will appear as the description proceeds, the invention consists in the novel features of construction. combinations of elements and arran ements of parts, and hereinafter to be tully described and pointed out in the appended claims.

In the accompanying drawing:

Figure 1 is a rear elevation of the device,

Figure 2 is a sectional view of Figure 1,

Figure 3 is a top plan view, the reflector being shown in section, and

Figure 4 is a sectional view on line H of Figure 1. I

Referring to the drawing, 1 designates the base which may be mounted in any suitable manner on the locomotive. said base having a post 2 rising therefrom. said post being provided with a recess 3 and a socket t. the purpose of which will appear later. The clamp 5 is employed and consists oi arcuate sections 6 and 7 which are curved transversely. the section 6 terminating at its lower end in a plate 8 for engagement in recess 3. the upper end of said section hav ing an ear 9 carried thereby, a similarly shaped ear 10 being formed upon the upper end of the section 7. A bolt 11 is engaged with. the ears 9 and 10 and can be conveniently manipulated to adjust the sections 1922. Serial No. 561,437.

through the medium of the handle 12, which is pivotally connected to one end of the bolt.

The lower end of the section 7 is provided with a nib 13 which is detachably engaged in the socket 4 whereby said section is connected with the post 2. the section 6 being supported on said post by the plate 8.

Apair of 'arcuate jaws 1.4 are confined by the sections 6 and 7, and have their side faces curved, as at 15 to correspond with the curvature of the sections 6 and 7. These jaws torm, in eiiect. a split ring. the confronting faces thereof serving to clamp the sleeve 16. said sleeve having mounted therein a socket 17 for supporting the incandescent light bulb 18. To interlock the sleeve 16 with the socket 17, the former carries a screw 16' which engages a recess 17 formed in the latter. as clearly shown in Figure 2 of the drawing. To prevent the sleeve 16 from rotating. but at the same time permitting the same to slide, a. rib 19 is carried thereby and engages a groove 20 formed in the adjacent jaw 14. The sleeve 16 is threaded. as at 21. tor a certain distance of its length. and has engaged therewith a nut 22 which bears against the adjacent faces of the jaws 14, said nut. having an annular flange 23 formed thereon, said flange being engaged with the lugs 24 carried by the jaws. The cooperating flanges 23 and lugs 24: serve to hold the nut in rotatable engagement w th the jaws l4 and it is obvious that when the nut is rotated it will feed the sleeve 16 longitudinally to a selected adiusted position.

Rigid segmental plates 25 are provided and have their inner edges secured to the respective sections 6 and 7. said sections having their tree edges provided with continuous transversely curved rims 26. which are adapted to detachahlv interlock with the similarly curved neck 27 ot the reflector 28, as clearlv shown in Figure 4: oi the drawing. Thus it will be observed that the reflector is firmly supported. but may be easily removed or replaced. when desired.

As shown in Figure 3. the bolt 11 is ecceutricallv mounted in the ears 9 and 10 so that when the bolt is adjusted to move the sections into binding engagement with the jaws 14 the plates will tilt slightly outwardly, thus causing the rims 26 to firmly engage the neck 27 of the reflector.

To obtain the desired focus the sleeve 16,

with the bulb 18, is moved longitudinally of its axis upon rotating; the nut 22. When it,

is desired to adjust the bulb relative the refiector the bolt 11 is manipulated to release the sections 6 and '7, whereupon the sleeve 16 can be grasped and the bulb adjusted about the axis of the reflector so that the rays of light can be directed at the proper point and distance in advance of the locomotive. This is due to the fact that the jaws 14 are free to swing in the sections 6 and 7 in the manner of a ball and socket connection, thereby permitting the bulb to be adjusted to various positions. Arranged between the confrontin ends of the jaws 14 are coils 14' which serve to positively spread the jaws when the bolt 11 is manipulated to release the sections 6 and 7. Since the sleeve 16 is only threaded for a portion of its length it will be apparent that it may slide freely between the jaws 1d when the nut 22 is rotated and ten sion relieved upon said jaws.

Current is furnished to the bulb 18 through the wires 29 which lead from a suitable source of electric energy on the locomotive.

What is claimed is:

1. In a device of the class described, the combination with a base, of a post carried thereby, a pair of adjustably connected arcuate sections mounted on the post, spaced jaws confined between the sections, a pair of plates carried by the sections, a reflector supported. by the plates, a sleeve adjustably supportedby the, jaws. and having a light element carried thereby.

2 In a device of the class described, the combination with a pair of connected sections. of plates carried by the sections, jaws carried by the sections, a sleeve engaged be tween the jaws. a light element associated with the sleeve, a reflector engaged with the plates. and means for adjusting; the sections to clamp the jaws and spread said plates to bindinn'ly engage the reflector.

In testimony whereof I ailiX my signature.

WILLIAM H. DE WITT. 

